No "evidence" of extraterrestrial activity. They just don't know what some stuff is so they won't rule it out. Worst case?

It could be hostile countries testing their products. These unidentified thingies can do things we the america people don't have a clue HOW they do.

Well if they were going to prepare use to consume ("TO SERVE MAN") they would have done so long ago. Right?

The only conclusion our folks have is that the TECHNOLOGY DISPLAYED IS NOT OURS.